Detonating-fuse.



,CHARLES Hi JOCKMUS, OF ANSONIA, CONNECTICUT.

DEToNATING-FUSE.

To all whom it may concern:

Be it known that I, CHARLES H. JoGKMUs, a citizen'of the United`States,-res1ding at Ansonia, county of New Haven, State of Connecticut,have invented an Improvement in Detonating-Fuses, of which the followingis a `specification.

This invention'has for its objects to .proride a novel detonating basefuse for projectiles, more especially minorA caliber projectiles such asare used for quick ring guns, which shall be thoroughly reliable andwill make the projectile perfectly safe to handle, so that it will standthe test of dro-pping many times without danger' of explosion and thefuse still remain operative, and which may be produced at a merefraction of the cost of this class of fuses as ordinarily made.

lVith these and other objects in View, I.

have devised the novel fuse which I will now describe, referring to theaccompanying drawing forming a partof this specification, and usingreference characters to indicate the several parts:

Figure 1 is an elevation of my novel fuse ready for assembling;

Fig. 2a plan vlew corresponding therewith; I v

Fig. 3 an inverted plan view;

Fig. 4 a longitudinal sectlon on the line 4 4 in Fig. 1, looking in thedirection of the arrows; -1

Fig. 5 an elevation of the firing pln detached; i Fig. 6 a detailsectional view on an enlarged scale, the sectionline being at rightangles to that in Fig. 4; I

Fig. 7 aseo-tion on the une 7-27 in- Fig. e, looking in the directionofthe arrows Fig. 8 a-view corresponding with Fig. 6,

- showing the tiring pin and segmentsin the tached, and

.detonating position;

Fig. 9 a'sectionon`theline 9-9 in Fig. 8,

lookingin the direction of the arrows;

Fig. 10a view of the segment springde- Fig. .11 is 'adetail view,'partly brolien away, 'showi ng theoperation ofthe s prlng in retainingthe segments in their normal position. il 2 20'.denotes the body of thefuse which 1s provided with 'an' internal shoulder 21 against which theinner end of the cap 22 rests. The outer end ofthe cap tapers forwardand inward slightly, and the cap is Speciication of Letters Patent.

Patented July 3, 1917.

` Application inea March 2o, 1916. serial No. 85,314.

securely retained in place againstthe shoulder by closing the open endof the body inward upon the cap, as clearly shown. .The ca p is providedwith the -usual pocket to receive a primer 23. 'Upon the inner face ofthe cap are segments 24, one end of` each.

segment being pivoted on a pin 25 which extends entirely through the capand is headed upon its outer end to prevent the possibility of its beingpulled out by the shock of firing. The segments are shown as crescentshaped and their'pivotal points are diametrically opposite to eachother, the free end of each segment being contiguous to the pivoted endof the other segment. 'The seg- Inents are provided in their outer faceswith circumferential grooves which receive a C- shaped spring 26, whichcloses the segments together and retains I'them in their normalposition, as in Figs. 6, 7 and 11. One end of the' spring is providedVwith an inturned end 27 which engages, ay hole in one of the 'I segmentsnear its free' end, the other end of the spring lyingin the grooveof theother segment in which it may slide freely. 28 denotes the Iiring pinwhich is provided with a shoulder 2 9 land with a relatively heavyweight 30 to insure detonation of the prlmer upon impact, as will bemore fully explained. y

'In assembling, the Vfiring pin is dropped into the body, the segmentsare pivoted to the cap, the springplaced in position,` a primer seatedin the pocket in the cap, and then the cap is setin place against theshoulclosingthe outer end of upon the cap. l.

Fuses of this class are inserted in the bases of the projectiles anddetonate upon impact. The projectiles are often fired at the rate of 150a minute, have a velocity of .2000 feet per second or more, and are ex-.pected to pass through a inch steel plate and explodev within ,six feetof the plate. The explosion is effected as follows When the shot isfired and the projectile takes the rifling of the gun barrel, thecentrifugal force of the projectile causes the segments to separate, i.e. open outward, overcoming the strength of the spring, which relatively-der on the body and secured in'place by the body inward light, so thatthe firing pin is released and'.

may pass between the segments.- Uponimpact, the velocity of theprojectile is checked, and, the firing pin being loose therein, the

blow of the firing pin upon the primer detonates it and the flame,passing through a hole or holes inthe cap, ignites the explosion chargeofthe projectile. It should be borne in mind that the spring, whilerelatively light, is suiiiciently strong to retain the segments closedinward under all conditions except the centrifugal force generated bythe rotation of the projectile after it takes the rifling of theV gunbarrel. Under all other conditions, the segments remain closed inward,as in Figs.` 6, 7 and 11, so

'that the shoulder of the firing pin cannot pass the segments and thepossibility of det-- .onationofthe primer by the firing pin is avoided.

'Having thus described my invention, I claim vl. A fuse4 of thecharacter described comprising a body having an internal shoulder, a capengaging the shoulder and secured in place by closing the end of thebody inward, segments carried by the cap, a contraotible spring formoving the segments inward, said spring being'located'in grooves in thesegments, anda firing pin lnormally retained out of detonating positionbythe segments and adapted to be released when the segments areseparated byentrifugal force. l

2. A fuse of the character described coming through the cap and headedon the Vouter side, grooved segments on the innerlfae of the cap pivotedon the pins, a- C-shaped pin having a shoulder which normally enf 3o l lprising a headed body, a cap 'Within the head having a primer pocket,pinsextend- .35, v spring therein which incloses the segments g and issecured to one of them, anda-firing;v

v gages the segments to retain it out 0f det- Vonating position `but isreleased when the-'40 .segments are separated by centrifugal force, Intestimony whereof I afix my signature,

CHARLES H. JooKMUs.-

